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Pàgina inicial > Articles > Articles publicats > Nondestructive thickness measurement of biological layers at the nanoscale by simultaneous topography and capacitance imaging |
Data: | 2007 |
Resum: | Nanoscale capacitance images of purple membrane layers are obtained simultaneously to topography in a nondestructive manner by operating alternating current sensing atomic force microscopy in jumping mode. Capacitance images show excellent agreement with theoretical modeling and prove to be a noninvasive method for measuring the thickness of purple membrane layers beyond the single monolayer limit with nanoscale lateral spatial resolution. With the ability of spatially resolving the capacitance while preserving the sample from damaging, this technique can be applied for nanoscale thickness measurement of other biological layers and soft materials in general. |
Drets: | Tots els drets reservats. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió publicada |
Matèria: | Capacitance ; Electric measurements ; Bioelectrochemistry ; Topography ; Gold ; Atomic force microscopy ; Monolayers ; Alternating current power transmission ; Nanomaterials ; Spatial resolution |
Publicat a: | Applied physics letters, Vol. 91, Issue 6 (August 2007) , p. 063111/1-063111/3, ISSN 1077-3118 |
4 p, 494.5 KB |